[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
39	/* used for struct dirent, AIX doesn't provide it */	47	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	48	#ifndef NAME_MAX
41	# define NAME_MAX 4096	49	# define NAME_MAX 4096
42	#endif	50	#endif
43		51
		52	#ifndef PTHREAD_STACK_MIN
		53	/* care for broken platforms, e.g. windows */
		54	# define PTHREAD_STACK_MIN 16384
		55	#endif
		56
44	#if __ia64	57	#if __ia64
45	# define STACKSIZE 65536	58	# define STACKSIZE 65536
		59	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		60	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	61	#else
47	# define STACKSIZE 8192	62	# define STACKSIZE 16384
48	#endif	63	#endif
		64
		65	/* buffer size for various temporary buffers */
		66	#define AIO_BUFSIZE 65536
		67
		68	#define dBUF \
		69	char *aio_buf; \
		70	LOCK (wrklock); \
		71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		72	UNLOCK (wrklock); \
		73	if (!aio_buf) \
		74	return -1;
49		75
50	enum {	76	enum {
51	REQ_QUIT,	77	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	78	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	82	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	84	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	85	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	86	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	87	REQ_BUSY,
62	};	88	};
63		89
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	90	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	91	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		92
67	typedef struct aio_cb	93	typedef struct aio_cb
68	{	94	{
69	struct aio_cb grp, grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	95	struct aio_cb *volatile next;
72
73	SV self; / the perl counterpart of this request, if any */
74		96
75	SV data, callback;	97	SV data, callback;
76	SV fh, fh2;	98	SV fh, fh2;
77	void dataptr, data2ptr;	99	void dataptr, data2ptr;
78	Stat_t *statdata;	100	Stat_t *statdata;
79	off_t offset;	101	off_t offset;
80	size_t length;	102	size_t length;
81	ssize_t result;	103	ssize_t result;
82		104
		105	STRLEN dataoffset;
83	int type;	106	int type;
84	int fd, fd2;	107	int fd, fd2;
85	int errorno;	108	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	109	mode_t mode; /* open */
		110
88	unsigned char cancelled;	111	unsigned char flags;
		112	unsigned char pri;
		113
		114	SV self; / the perl counterpart of this request, if any */
		115	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	116	} aio_cb;
		117
		118	enum {
		119	FLAG_CANCELLED = 0x01,
		120	};
90		121
91	typedef aio_cb *aio_req;	122	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	123	typedef aio_cb *aio_req_ornot;
93		124
		125	enum {
		126	PRI_MIN = -4,
		127	PRI_MAX = 4,
		128
		129	DEFAULT_PRI = 0,
		130	PRI_BIAS = -PRI_MIN,
		131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		132	};
		133
		134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		135
94	static int started, wanted;	136	static int started, wanted;
95	static volatile int nreqs;	137	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];	138	static int respipe [2];
98		139
		140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		142	#else
		143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		144	#endif
		145
		146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		148
		149	/* worker threasd management */
		150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		151
		152	typedef struct worker {
		153	/* locked by wrklock */
		154	struct worker prev, next;
		155
		156	pthread_t tid;
		157
		158	/* locked by reslock, reqlock or wrklock */
		159	aio_req req; /* currently processed request */
		160	void *dbuf;
		161	DIR *dirp;
		162	} worker;
		163
		164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		165
		166	static void worker_clear (worker *wrk)
		167	{
		168	if (wrk->dirp)
		169	{
		170	closedir (wrk->dirp);
		171	wrk->dirp = 0;
		172	}
		173
		174	if (wrk->dbuf)
		175	{
		176	free (wrk->dbuf);
		177	wrk->dbuf = 0;
		178	}
		179	}
		180
		181	static void worker_free (worker *wrk)
		182	{
		183	wrk->next->prev = wrk->prev;
		184	wrk->prev->next = wrk->next;
		185
		186	free (wrk);
		187	}
		188
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		192
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	193	/*
104	static volatile aio_req ress, rese; /* queue start, queue end */	194	* a somewhat faster data structure might be nice, but
		195	* with 8 priorities this actually needs <20 insns
		196	* per shift, the most expensive operation.
		197	*/
		198	typedef struct {
		199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		200	int size;
		201	} reqq;
105		202
		203	static reqq req_queue;
		204	static reqq res_queue;
		205
		206	int reqq_push (reqq *q, aio_req req)
		207	{
		208	int pri = req->pri;
		209	req->next = 0;
		210
		211	if (q->qe[pri])
		212	{
		213	q->qe[pri]->next = req;
		214	q->qe[pri] = req;
		215	}
		216	else
		217	q->qe[pri] = q->qs[pri] = req;
		218
		219	return q->size++;
		220	}
		221
		222	aio_req reqq_shift (reqq *q)
		223	{
		224	int pri;
		225
		226	if (!q->size)
		227	return 0;
		228
		229	--q->size;
		230
		231	for (pri = NUM_PRI; pri--; )
		232	{
		233	aio_req req = q->qs[pri];
		234
		235	if (req)
		236	{
		237	if (!(q->qs[pri] = req->next))
		238	q->qe[pri] = 0;
		239
		240	return req;
		241	}
		242	}
		243
		244	abort ();
		245	}
		246
		247	static int poll_cb ();
		248	static void req_invoke (aio_req req);
106	static void req_free (aio_req req);	249	static void req_free (aio_req req);
		250	static void req_cancel (aio_req req);
107		251
108	/* must be called at most once */	252	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	253	static SV req_sv (aio_req req, const char klass)
110	{	254	{
		255	if (!req->self)
		256	{
111	req->self = (SV *)newHV ();	257	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		259	}
113		260
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	262	}
116		263
117	static aio_req SvAIO_REQ (SV *sv)	264	static aio_req SvAIO_REQ (SV *sv)
118	{	265	{
		266	MAGIC *mg;
		267
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	268	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	269	croak ("object of class " AIO_REQ_KLASS " expected");
121		270
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		272
124	return mg ? (aio_req)mg->mg_ptr : 0;	273	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	274	}
126		275
		276	static void aio_grp_feed (aio_req grp)
		277	{
		278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		279	{
		280	int old_len = grp->length;
		281
		282	if (grp->fh2 && SvOK (grp->fh2))
		283	{
		284	dSP;
		285
		286	ENTER;
		287	SAVETMPS;
		288	PUSHMARK (SP);
		289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		290	PUTBACK;
		291	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		292	SPAGAIN;
		293	FREETMPS;
		294	LEAVE;
		295	}
		296
		297	/* stop if no progress has been made */
		298	if (old_len == grp->length)
		299	{
		300	SvREFCNT_dec (grp->fh2);
		301	grp->fh2 = 0;
		302	break;
		303	}
		304	}
		305	}
		306
		307	static void aio_grp_dec (aio_req grp)
		308	{
		309	--grp->length;
		310
		311	/* call feeder, if applicable */
		312	aio_grp_feed (grp);
		313
		314	/* finish, if done */
		315	if (!grp->length && grp->fd)
		316	{
		317	req_invoke (grp);
		318	req_free (grp);
		319	}
		320	}
		321
127	static void poll_wait ()	322	static void poll_wait ()
128	{	323	{
129	if (nreqs && !ress)
130	{
131	fd_set rfd;	324	fd_set rfd;
		325
		326	while (nreqs)
		327	{
		328	int size;
		329	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		330	LOCK (reslock);
		331	#endif
		332	size = res_queue.size;
		333	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		334	UNLOCK (reslock);
		335	#endif
		336
		337	if (size)
		338	return;
		339
132	FD_ZERO(&rfd);	340	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);	341	FD_SET(respipe [0], &rfd);
134		342
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	343	select (respipe [0] + 1, &rfd, 0, 0, 0);
136	}	344	}
137	}	345	}
138		346
139	static void req_invoke (aio_req req)	347	static void req_invoke (aio_req req)
140	{	348	{
141	dSP;	349	dSP;
142	int errorno = errno;
143		350
144	if (req->cancelled \|\| !SvOK (req->callback))	351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
145	return;	352	{
146
147	errno = req->errorno;	353	errno = req->errorno;
148		354
149	ENTER;	355	ENTER;
		356	SAVETMPS;
150	PUSHMARK (SP);	357	PUSHMARK (SP);
		358	EXTEND (SP, 1);
151		359
152	switch (req->type)	360	switch (req->type)
153	{
154	case REQ_READDIR:
155	{	361	{
156	SV *rv = &PL_sv_undef;	362	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	363	{
160	char *buf = req->data2ptr;	364	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		365
163	while (req->result)	366	if (req->result >= 0)
164	{	367	{
		368	int i;
		369	char *buf = req->data2ptr;
		370	AV *av = newAV ();
		371
		372	av_extend (av, req->result - 1);
		373
		374	for (i = 0; i < req->result; ++i)
		375	{
165	SV *sv = newSVpv (buf, 0);	376	SV *sv = newSVpv (buf, 0);
166		377
167	av_push (av, sv);	378	av_store (av, i, sv);
168	buf += SvCUR (sv) + 1;	379	buf += SvCUR (sv) + 1;
169	req->result--;	380	}
		381
		382	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	383	}
171		384
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	385	PUSHs (rv);
173	}	386	}
		387	break;
174		388
175	XPUSHs (rv);	389	case REQ_OPEN:
		390	{
		391	/* convert fd to fh */
		392	SV *fh;
		393
		394	PUSHs (sv_2mortal (newSViv (req->result)));
		395	PUTBACK;
		396	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		397	SPAGAIN;
		398
		399	fh = SvREFCNT_inc (POPs);
		400
		401	PUSHMARK (SP);
		402	XPUSHs (sv_2mortal (fh));
		403	}
		404	break;
		405
		406	case REQ_GROUP:
		407	req->fd = 2; /* mark group as finished */
		408
		409	if (req->data)
		410	{
		411	int i;
		412	AV av = (AV )req->data;
		413
		414	EXTEND (SP, AvFILL (av) + 1);
		415	for (i = 0; i <= AvFILL (av); ++i)
		416	PUSHs (*av_fetch (av, i, 0));
		417	}
		418	break;
		419
		420	case REQ_NOP:
		421	case REQ_BUSY:
		422	break;
		423
		424	default:
		425	PUSHs (sv_2mortal (newSViv (req->result)));
		426	break;
176	}	427	}
177	break;
178		428
179	case REQ_OPEN:
180	{
181	/* convert fd to fh */
182	SV *fh;
183		429
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	430	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
187	SPAGAIN;
188
189	fh = SvREFCNT_inc (POPs);
190
191	PUSHMARK (SP);
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}
204
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID \| G_EVAL);	431	call_sv (req->callback, G_VOID \| G_EVAL);
208	SPAGAIN;	432	SPAGAIN;
		433
		434	FREETMPS;
		435	LEAVE;
		436	}
		437
		438	if (req->grp)
		439	{
		440	aio_req grp = req->grp;
		441
		442	/* unlink request */
		443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		445
		446	if (grp->grp_first == req)
		447	grp->grp_first = req->grp_next;
		448
		449	aio_grp_dec (grp);
		450	}
209		451
210	if (SvTRUE (ERRSV))	452	if (SvTRUE (ERRSV))
211	{	453	{
212	req_free (req);	454	req_free (req);
213	croak (0);	455	croak (0);
214	}	456	}
215
216	LEAVE;
217
218	errno = errorno;
219	}	457	}
220		458
221	static void req_free (aio_req req)	459	static void req_free (aio_req req)
222	{	460	{
223	if (req->grp)
224	{
225	aio_req grp = req->grp;
226
227	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;
230
231	if (grp->grp_next == grp && grp->fd)
232	{
233	req_invoke (grp);
234	req_free (grp);
235	}
236	}
237
238	if (req->self)	461	if (req->self)
239	{	462	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	463	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	464	SvREFCNT_dec (req->self);
242	}	465	}
243		466
244	if (req->data)
245	SvREFCNT_dec (req->data);	467	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	468	SvREFCNT_dec (req->fh);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	469	SvREFCNT_dec (req->fh2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	470	SvREFCNT_dec (req->callback);
		471	Safefree (req->statdata);
258		472
259	if (req->type == REQ_READDIR && req->result >= 0)	473	if (req->type == REQ_READDIR)
260	free (req->data2ptr);	474	free (req->data2ptr);
261		475
262	Safefree (req);	476	Safefree (req);
263	}	477	}
264		478
		479	static void req_cancel_subs (aio_req grp)
		480	{
		481	aio_req sub;
		482
		483	if (grp->type != REQ_GROUP)
		484	return;
		485
		486	SvREFCNT_dec (grp->fh2);
		487	grp->fh2 = 0;
		488
		489	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		490	req_cancel (sub);
		491	}
		492
265	static void req_cancel (aio_req req)	493	static void req_cancel (aio_req req)
266	{	494	{
267	req->cancelled = 1;	495	req->flags \|= FLAG_CANCELLED;
268		496
269	if (req->type == REQ_GROUP)	497	req_cancel_subs (req);
270	{
271	aio_req sub;
272
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
274	req_cancel (sub);
275	}
276	}	498	}
277		499
278	static int poll_cb ()	500	static int poll_cb ()
279	{	501	{
280	dSP;	502	dSP;
…		…
282	int do_croak = 0;	504	int do_croak = 0;
283	aio_req req;	505	aio_req req;
284		506
285	for (;;)	507	for (;;)
286	{	508	{
287	pthread_mutex_lock (&reslock);	509	LOCK (reslock);
288	req = ress;	510	req = reqq_shift (&res_queue);
289		511
290	if (req)	512	if (req)
291	{	513	{
292	ress = req->next;
293
294	if (!ress)	514	if (!res_queue.size)
295	{	515	{
296	/* read any signals sent by the worker threads */	516	/* read any signals sent by the worker threads */
297	char buf [32];	517	char buf [32];
298	while (read (respipe [0], buf, 32) == 32)	518	while (read (respipe [0], buf, 32) == 32)
299	;	519	;
300
301	rese = 0;
302	}	520	}
303	}	521	}
304		522
305	pthread_mutex_unlock (&reslock);	523	UNLOCK (reslock);
306		524
307	if (!req)	525	if (!req)
308	break;	526	break;
309		527
310	nreqs--;	528	--nreqs;
311		529
312	if (req->type == REQ_QUIT)	530	if (req->type == REQ_QUIT)
313	started--;	531	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)	532	else if (req->type == REQ_GROUP && req->length)
315	{	533	{
316	req->fd = 1; /* mark request as delayed */	534	req->fd = 1; /* mark request as delayed */
317	continue;	535	continue;
318	}	536	}
319	else	537	else
…		…
345	static void aio_proc(void arg);	563	static void aio_proc(void arg);
346		564
347	static void start_thread (void)	565	static void start_thread (void)
348	{	566	{
349	sigset_t fullsigset, oldsigset;	567	sigset_t fullsigset, oldsigset;
350	pthread_t tid;
351	pthread_attr_t attr;	568	pthread_attr_t attr;
		569
		570	worker *wrk = calloc (1, sizeof (worker));
		571
		572	if (!wrk)
		573	croak ("unable to allocate worker thread data");
352		574
353	pthread_attr_init (&attr);	575	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);	576	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356		578
357	sigfillset (&fullsigset);	579	sigfillset (&fullsigset);
		580
		581	LOCK (wrklock);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359		583
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		585	{
		586	wrk->prev = &wrk_first;
		587	wrk->next = wrk_first.next;
		588	wrk_first.next->prev = wrk;
		589	wrk_first.next = wrk;
361	started++;	590	started++;
		591	}
		592	else
		593	free (wrk);
362		594
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);	595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		596	UNLOCK (wrklock);
364	}	597	}
365		598
366	static void req_send (aio_req req)	599	static void req_send (aio_req req)
367	{	600	{
368	while (started < wanted && nreqs >= started)	601	while (started < wanted && nreqs >= started)
369	start_thread ();	602	start_thread ();
370		603
371	nreqs++;	604	++nreqs;
372		605
373	pthread_mutex_lock (&reqlock);	606	LOCK (reqlock);
374		607	reqq_push (&req_queue, req);
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);	608	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);	609	UNLOCK (reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}	610	}
399		611
400	static void end_thread (void)	612	static void end_thread (void)
401	{	613	{
402	aio_req req;	614	aio_req req;
		615
403	Newz (0, req, 1, aio_cb);	616	Newz (0, req, 1, aio_cb);
		617
404	req->type = REQ_QUIT;	618	req->type = REQ_QUIT;
		619	req->pri = PRI_MAX + PRI_BIAS;
405		620
406	req_send (req);	621	req_send (req);
407	}	622	}
408		623
409	static void min_parallel (int nthreads)	624	static void min_parallel (int nthreads)
…		…
461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
462	{	677	{
463	ssize_t res;	678	ssize_t res;
464	off_t ooffset;	679	off_t ooffset;
465		680
466	pthread_mutex_lock (&preadwritelock);	681	LOCK (preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);	682	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);	683	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);	684	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);	685	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);	686	UNLOCK (preadwritelock);
472		687
473	return res;	688	return res;
474	}	689	}
475		690
476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
477	{	692	{
478	ssize_t res;	693	ssize_t res;
479	off_t ooffset;	694	off_t ooffset;
480		695
481	pthread_mutex_lock (&preadwritelock);	696	LOCK (preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);	697	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);	698	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);	699	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);	700	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);	701	UNLOCK (preadwritelock);
487		702
488	return res;	703	return res;
489	}	704	}
490	#endif	705	#endif
491		706
492	#if !HAVE_FDATASYNC	707	#if !HAVE_FDATASYNC
493	# define fdatasync fsync	708	# define fdatasync fsync
494	#endif	709	#endif
495		710
496	#if !HAVE_READAHEAD	711	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
498		713
499	static ssize_t readahead (int fd, off_t offset, size_t count)	714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
500	{	715	{
501	char readahead_buf[4096];	716	dBUF;
502		717
503	while (count > 0)	718	while (count > 0)
504	{	719	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
506		721
507	pread (fd, readahead_buf, len, offset);	722	pread (fd, aio_buf, len, offset);
508	offset += len;	723	offset += len;
509	count -= len;	724	count -= len;
510	}	725	}
511		726
512	errno = 0;	727	errno = 0;
513	}	728	}
		729
514	#endif	730	#endif
515		731
516	#if !HAVE_READDIR_R	732	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r	733	# define readdir_r aio_readdir_r
518		734
…		…
521	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	737	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
522	{	738	{
523	struct dirent *e;	739	struct dirent *e;
524	int errorno;	740	int errorno;
525		741
526	pthread_mutex_lock (&readdirlock);	742	LOCK (readdirlock);
527		743
528	e = readdir (dirp);	744	e = readdir (dirp);
529	errorno = errno;	745	errorno = errno;
530		746
531	if (e)	747	if (e)
…		…
534	strcpy (ent->d_name, e->d_name);	750	strcpy (ent->d_name, e->d_name);
535	}	751	}
536	else	752	else
537	*res = 0;	753	*res = 0;
538		754
539	pthread_mutex_unlock (&readdirlock);	755	UNLOCK (readdirlock);
540		756
541	errno = errorno;	757	errno = errorno;
542	return e ? 0 : -1;	758	return e ? 0 : -1;
543	}	759	}
544	#endif	760	#endif
545		761
546	/* sendfile always needs emulation */	762	/* sendfile always needs emulation */
547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
548	{	764	{
549	ssize_t res;	765	ssize_t res;
550		766
551	if (!count)	767	if (!count)
552	return 0;	768	return 0;
…		…
601	#endif	817	#endif
602	)	818	)
603	)	819	)
604	{	820	{
605	/* emulate sendfile. this is a major pain in the ass */	821	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	822	dBUF;
		823
607	res = 0;	824	res = 0;
608		825
609	while (count)	826	while (count)
610	{	827	{
611	ssize_t cnt;	828	ssize_t cnt;
612		829
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		831
615	if (cnt <= 0)	832	if (cnt <= 0)
616	{	833	{
617	if (cnt && !res) res = -1;	834	if (cnt && !res) res = -1;
618	break;	835	break;
619	}	836	}
620		837
621	cnt = write (ofd, buf, cnt);	838	cnt = write (ofd, aio_buf, cnt);
622		839
623	if (cnt <= 0)	840	if (cnt <= 0)
624	{	841	{
625	if (cnt && !res) res = -1;	842	if (cnt && !res) res = -1;
626	break;	843	break;
…		…
634		851
635	return res;	852	return res;
636	}	853	}
637		854
638	/* read a full directory */	855	/* read a full directory */
639	static int scandir_ (const char path, void *namesp)	856	static void scandir_ (aio_req req, worker *self)
640	{	857	{
641	DIR *dirp = opendir (path);	858	DIR *dirp;
642	union	859	union
643	{	860	{
644	struct dirent d;	861	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;	863	} *u;
647	struct dirent *entp;	864	struct dirent *entp;
648	char name, names;	865	char name, names;
649	int memlen = 4096;	866	int memlen = 4096;
650	int memofs = 0;	867	int memofs = 0;
651	int res = 0;	868	int res = 0;
652	int errorno;	869	int errorno;
653		870
654	if (!dirp)	871	LOCK (wrklock);
655	return -1;	872	self->dirp = dirp = opendir (req->dataptr);
		873	self->dbuf = u = malloc (sizeof (*u));
		874	UNLOCK (wrklock);
656		875
657	names = malloc (memlen);	876	req->data2ptr = names = malloc (memlen);
658		877
		878	if (dirp && u && names)
659	for (;;)	879	for (;;)
660	{	880	{
		881	errno = 0;
661	errno = 0, readdir_r (dirp, &u.d, &entp);	882	readdir_r (dirp, &u->d, &entp);
662		883
663	if (!entp)	884	if (!entp)
664	break;	885	break;
665		886
666	name = entp->d_name;	887	name = entp->d_name;
667		888
668	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	889	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
669	{	890	{
670	int len = strlen (name) + 1;	891	int len = strlen (name) + 1;
671		892
672	res++;	893	res++;
673		894
674	while (memofs + len > memlen)	895	while (memofs + len > memlen)
675	{	896	{
676	memlen *= 2;	897	memlen *= 2;
		898	LOCK (wrklock);
677	names = realloc (names, memlen);	899	req->data2ptr = names = realloc (names, memlen);
		900	UNLOCK (wrklock);
		901
678	if (!names)	902	if (!names)
679	break;	903	break;
680	}	904	}
681		905
682	memcpy (names + memofs, name, len);	906	memcpy (names + memofs, name, len);
683	memofs += len;	907	memofs += len;
684	}	908	}
685	}	909	}
686		910
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)	911	if (errno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;	912	res = -1;
695	}	913
696		914	req->result = res;
697	namesp = (void )names;
698	return res;
699	}	915	}
700		916
701	/*****************************************************************************/	917	/*****************************************************************************/
702		918
703	static void aio_proc (void thr_arg)	919	static void aio_proc (void thr_arg)
704	{	920	{
705	aio_req req;	921	aio_req req;
706	int type;	922	int type;
		923	worker self = (worker )thr_arg;
707		924
708	do	925	do
709	{	926	{
710	pthread_mutex_lock (&reqlock);	927	LOCK (reqlock);
711		928
712	for (;;)	929	for (;;)
713	{	930	{
714	req = reqs;	931	self->req = req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		932
722	if (req)	933	if (req)
723	break;	934	break;
724		935
725	pthread_cond_wait (&reqwait, &reqlock);	936	pthread_cond_wait (&reqwait, &reqlock);
726	}	937	}
727		938
728	pthread_mutex_unlock (&reqlock);	939	UNLOCK (reqlock);
729		940
730	errno = 0; /* strictly unnecessary */	941	errno = 0; /* strictly unnecessary */
		942	type = req->type; /* remember type for QUIT check */
731		943
732	if (!req->cancelled)	944	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	945	switch (type)
734	{	946	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
737		949
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
740		952
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
744		956
…		…
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
752		964
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	966	case REQ_FSYNC: req->result = fsync (req->fd); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	967	case REQ_READDIR: scandir_ (req, self); break;
756		968
757	case REQ_SLEEP:	969	case REQ_BUSY:
758	{	970	{
759	struct timeval tv;	971	struct timeval tv;
760		972
761	tv.tv_sec = req->fd;	973	tv.tv_sec = req->fd;
762	tv.tv_usec = req->fd2;	974	tv.tv_usec = req->fd2;
763		975
764	req->result = select (0, 0, 0, 0, &tv);	976	req->result = select (0, 0, 0, 0, &tv);
765	}	977	}
766		978
		979	case REQ_GROUP:
		980	case REQ_NOP:
767	case REQ_QUIT:	981	case REQ_QUIT:
768	break;	982	break;
769		983
770	default:	984	default:
771	req->result = ENOSYS;	985	req->result = ENOSYS;
772	break;	986	break;
773	}	987	}
774		988
775	req->errorno = errno;	989	req->errorno = errno;
776		990
777	pthread_mutex_lock (&reslock);	991	LOCK (reslock);
778		992
779	req->next = 0;	993	if (!reqq_push (&res_queue, req))
780
781	if (rese)
782	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */	994	/* write a dummy byte to the pipe so fh becomes ready */
791	write (respipe [1], &respipe, 1);	995	write (respipe [1], &respipe, 1);
792	}
793		996
794	pthread_mutex_unlock (&reslock);	997	self->req = 0;
		998	worker_clear (self);
		999
		1000	UNLOCK (reslock);
795	}	1001	}
796	while (type != REQ_QUIT);	1002	while (type != REQ_QUIT);
797		1003
		1004	LOCK (wrklock);
		1005	worker_free (self);
		1006	UNLOCK (wrklock);
		1007
798	return 0;	1008	return 0;
799	}	1009	}
800		1010
801	/*****************************************************************************/	1011	/*****************************************************************************/
802		1012
803	static void atfork_prepare (void)	1013	static void atfork_prepare (void)
804	{	1014	{
805	pthread_mutex_lock (&reqlock);	1015	LOCK (wrklock);
806	pthread_mutex_lock (&reslock);	1016	LOCK (reqlock);
		1017	LOCK (reslock);
807	#if !HAVE_PREADWRITE	1018	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);	1019	LOCK (preadwritelock);
809	#endif	1020	#endif
810	#if !HAVE_READDIR_R	1021	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);	1022	LOCK (readdirlock);
812	#endif	1023	#endif
813	}	1024	}
814		1025
815	static void atfork_parent (void)	1026	static void atfork_parent (void)
816	{	1027	{
817	#if !HAVE_READDIR_R	1028	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);	1029	UNLOCK (readdirlock);
819	#endif	1030	#endif
820	#if !HAVE_PREADWRITE	1031	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);	1032	UNLOCK (preadwritelock);
822	#endif	1033	#endif
823	pthread_mutex_unlock (&reslock);	1034	UNLOCK (reslock);
824	pthread_mutex_unlock (&reqlock);	1035	UNLOCK (reqlock);
		1036	UNLOCK (wrklock);
825	}	1037	}
826		1038
827	static void atfork_child (void)	1039	static void atfork_child (void)
828	{	1040	{
829	aio_req prv;	1041	aio_req prv;
830		1042
		1043	while (prv = reqq_shift (&req_queue))
		1044	req_free (prv);
		1045
		1046	while (prv = reqq_shift (&res_queue))
		1047	req_free (prv);
		1048
		1049	while (wrk_first.next != &wrk_first)
		1050	{
		1051	worker *wrk = wrk_first.next;
		1052
		1053	if (wrk->req)
		1054	req_free (wrk->req);
		1055
		1056	worker_clear (wrk);
		1057	worker_free (wrk);
		1058	}
		1059
831	started = 0;	1060	started = 0;
832		1061	nreqs = 0;
833	while (reqs)
834	{
835	prv = reqs;
836	reqs = prv->next;
837	req_free (prv);
838	}
839
840	reqs = reqe = 0;
841
842	while (ress)
843	{
844	prv = ress;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850		1062
851	close (respipe [0]);	1063	close (respipe [0]);
852	close (respipe [1]);	1064	close (respipe [1]);
853	create_pipe ();	1065	create_pipe ();
854		1066
855	atfork_parent ();	1067	atfork_parent ();
856	}	1068	}
857		1069
858	#define dREQ \	1070	#define dREQ \
859	aio_req req; \	1071	aio_req req; \
		1072	int req_pri = next_pri; \
		1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	1074	\
861	if (SvOK (callback) && !SvROK (callback)) \	1075	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	1076	croak ("callback must be undef or of reference type"); \
863	\	1077	\
864	Newz (0, req, 1, aio_cb); \	1078	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1079	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1080	croak ("out of memory during aio_req allocation"); \
867	\	1081	\
868	req->callback = newSVsv (callback)	1082	req->callback = newSVsv (callback); \
		1083	req->pri = req_pri
869		1084
870	#define REQ_SEND \	1085	#define REQ_SEND \
871	req_send (req); \	1086	req_send (req); \
872	\	1087	\
873	if (GIMME_V != G_VOID) \	1088	if (GIMME_V != G_VOID) \
…		…
895		1110
896	void	1111	void
897	max_parallel (nthreads)	1112	max_parallel (nthreads)
898	int nthreads	1113	int nthreads
899	PROTOTYPE: $	1114	PROTOTYPE: $
900
901	int
902	max_outstanding (nreqs)
903	int nreqs
904	PROTOTYPE: $
905	CODE:
906	RETVAL = max_outstanding;
907	max_outstanding = nreqs;
908		1115
909	void	1116	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
911	SV * pathname	1118	SV * pathname
912	int flags	1119	int flags
…		…
1127		1334
1128	REQ_SEND;	1335	REQ_SEND;
1129	}	1336	}
1130		1337
1131	void	1338	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1339	aio_busy (delay,callback=&PL_sv_undef)
1133	double delay	1340	double delay
1134	SV * callback	1341	SV * callback
1135	PPCODE:	1342	PPCODE:
1136	{	1343	{
1137	dREQ;	1344	dREQ;
1138		1345
1139	req->type = REQ_SLEEP;	1346	req->type = REQ_BUSY;
1140	req->fd = delay < 0. ? 0 : delay;	1347	req->fd = delay < 0. ? 0 : delay;
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1142		1349
1143	REQ_SEND;	1350	REQ_SEND;
1144	}	1351	}
…		…
1148	SV * callback	1355	SV * callback
1149	PROTOTYPE: ;$	1356	PROTOTYPE: ;$
1150	PPCODE:	1357	PPCODE:
1151	{	1358	{
1152	dREQ;	1359	dREQ;
		1360
1153	req->type = REQ_GROUP;	1361	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156
1157	req_send (req);	1362	req_send (req);
		1363
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	1365	}
		1366
		1367	void
		1368	aio_nop (callback=&PL_sv_undef)
		1369	SV * callback
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->type = REQ_NOP;
		1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aioreq_pri (int pri = DEFAULT_PRI)
		1381	CODE:
		1382	if (pri < PRI_MIN) pri = PRI_MIN;
		1383	if (pri > PRI_MAX) pri = PRI_MAX;
		1384	next_pri = pri + PRI_BIAS;
		1385
		1386	void
		1387	aioreq_nice (int nice = 0)
		1388	CODE:
		1389	nice = next_pri - nice;
		1390	if (nice < PRI_MIN) nice = PRI_MIN;
		1391	if (nice > PRI_MAX) nice = PRI_MAX;
		1392	next_pri = nice + PRI_BIAS;
1160		1393
1161	void	1394	void
1162	flush ()	1395	flush ()
1163	PROTOTYPE:	1396	PROTOTYPE:
1164	CODE:	1397	CODE:
…		…
1207	CODE:	1440	CODE:
1208	RETVAL = nreqs;	1441	RETVAL = nreqs;
1209	OUTPUT:	1442	OUTPUT:
1210	RETVAL	1443	RETVAL
1211		1444
		1445	PROTOTYPES: DISABLE
		1446
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213		1448
1214	void	1449	void
1215	cancel (aio_req_ornot req)	1450	cancel (aio_req_ornot req)
1216	PROTOTYPE:
1217	CODE:	1451	CODE:
1218	req_cancel (req);	1452	req_cancel (req);
1219		1453
		1454	void
		1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1456	CODE:
		1457	SvREFCNT_dec (req->callback);
		1458	req->callback = newSVsv (callback);
		1459
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1461
1222	void	1462	void
1223	add (aio_req grp, ...)	1463	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1464	PPCODE:
1226	{	1465	{
1227	int i;	1466	int i;
		1467	aio_req req;
		1468
		1469	if (grp->fd == 2)
		1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		1471
1229	for (i = 1; i < items; ++i )	1472	for (i = 1; i < items; ++i )
1230	{	1473	{
1231	if (GIMME_V != G_VOID)	1474	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1476
1234	aio_req req = SvAIO_REQ (ST (i));	1477	req = SvAIO_REQ (ST (i));
1235		1478
1236	if (req)	1479	if (req)
1237	{	1480	{
1238	req->grp_prev = grp;	1481	++grp->length;
1239	req->grp_next = grp->grp_next;
1240	grp->grp_next->grp_prev = req;
1241	grp->grp_next = req;
1242
1243	req->grp = grp;	1482	req->grp = grp;
		1483
		1484	req->grp_prev = 0;
		1485	req->grp_next = grp->grp_first;
		1486
		1487	if (grp->grp_first)
		1488	grp->grp_first->grp_prev = req;
		1489
		1490	grp->grp_first = req;
1244	}	1491	}
1245	}	1492	}
1246	}	1493	}
1247		1494
		1495	void
		1496	cancel_subs (aio_req_ornot req)
		1497	CODE:
		1498	req_cancel_subs (req);
		1499
		1500	void
		1501	result (aio_req grp, ...)
		1502	CODE:
		1503	{
		1504	int i;
		1505	AV *av = newAV ();
		1506
		1507	for (i = 1; i < items; ++i )
		1508	av_push (av, newSVsv (ST (i)));
		1509
		1510	SvREFCNT_dec (grp->data);
		1511	grp->data = (SV *)av;
		1512	}
		1513
		1514	void
		1515	limit (aio_req grp, int limit)
		1516	CODE:
		1517	grp->fd2 = limit;
		1518	aio_grp_feed (grp);
		1519
		1520	void
		1521	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1522	CODE:
		1523	{
		1524	SvREFCNT_dec (grp->fh2);
		1525	grp->fh2 = newSVsv (callback);
		1526
		1527	if (grp->fd2 <= 0)
		1528	grp->fd2 = 2;
		1529
		1530	aio_grp_feed (grp);
		1531	}
		1532

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs. Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs.
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC